I have a 2004 Tailblazer with the rear A/c unit.When I turn the truck on it makes a clicking noise for a few minutes then stops. It will blow air but its not cold,I un hooked something back there and the clicking stopped but I dont know what it is

1 Suggested Answer

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.goodluck!

Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.

Related Questions:

Try simple first, make sure it isn't frozen up and the click is the fan skipping off of ice buildup....no wet spot under your car when you are parked for a few min is a dead give away, or water sprinkles blowing through vent when way over full, clear drain ports when thawed out also check to see if something went down vent.

most fans in vehicles have phospher bronze bushes as bearings for the motor. These become dry and make a noise as described with thr motor eventually stopping. removal of the unit to replace or lubricate the bushes are the only answers. when you have done this check the fuse as it will probably have blown to protect the fan motor

Just got an answer from Chevy Dealer. When you replaced the battery it loses its memory as to where the door actuators were (the flaps that control the heat and A/C).

The fix:Turn everything off and let the car sit overnight. The computer should reset itself during its learnings process.In the morning turn on the ignition and let the car run for a few minutes before turning on the climate control.

If this doesn't work, plan on 1-1.5hours of labor for a technician to reset the actuators at the dealership.

Sounds like the fan needs to be replaced. But first, to check for obstructions, remove the carpet liner from the underside of the dash on the passenger side and you'll see the blower motor under the dash held in with three screws. If there's something obvious blocking it, remove it and reinstall the fan. If there's nothing blocking it, then you'll probably need to replace the fan. Any auto parts store, Rockauto.com or E-Bay will have the correct fan for your Grand Prix.

Do you have air suspension? If so, it could be a relay clicking. Otherwise I would recommend having a chassis lube job done on axle and bearings. Also make sure tire is not rubbing on strut/shock tower. Some of these have a plastic guard on the shock/strut tower that like to vibrate as well.

I have the 03 Expy with continuous rear air unit "clicking" or more accurately flapping of the air damper while the plastic gears in the 2L2H-19E616-AA grind away into toothlessness. Ford designed this unit to find the end of travel by jamming the motor to a stop and monitoring the current to determine when to stop applying voltage. That would probably be fine if the gears were designed to handle the jammed torque or the motor did not slip out of groove and continue turning and cracking the plastic gears.

There are two white colored boxes, one is for the temp plenum door, the other the upper/lower air flow. To be sure, do what I did, turn on the ignition, rear ac/heat and listen for the obnoxious click/thump as you move the temp control from full heat to full cool, you will know which part. Disconnect the electrical connector, four bolts and it is out!

Go to your dealer, part should be about $60 or less, look on line, lots of dealers sell for this or less on internet.